Month Temp Rain Crowds PriceVerdict
January9° / 3°C99mmLow$Cold but uncrowded. Great for museums and food tours.
February10° / 3°C73mmLow$Still chilly. Tulip season starts late Feb.
March13° / 5°C63mmLow-Med$Spring arrives. Istanbul Tulip Festival begins.
April17° / 9°C47mmMedium$$★ Excellent. Tulips, pleasant weather, moderate crowds.
May22° / 13°C34mmMedium$$★ Best month. Warm, sunny, everything open.
June27° / 18°C22mmHigh$$$Hot but great. Long days, rooftop season.
July30° / 21°C16mmVery High$$$Peak heat and crowds. Book far ahead.
August30° / 21°C18mmVery High$$$Hottest month. Bosphorus breezes help.
September26° / 18°C42mmHigh$$★ Excellent. Warm, less crowded, great prices.
October20° / 13°C67mmMedium$$Still warm. Autumn colors. Great value.
November15° / 9°C91mmLow$Cool and rainy. Bargain season begins.
December10° / 5°C109mmLow-Med$Festive atmosphere. Cold but atmospheric.

Frequently Asked Questions

What is the best month to visit Istanbul?

The best months are April and May and September. ★ Excellent. Tulips, pleasant weather, moderate crowds.

Is Istanbul crowded in summer?

July and August are the busiest months with Very High crowd levels. For fewer crowds, visit in May, September, or October.

What is the cheapest time to visit Istanbul?

Winter months (November–March) usually have the lowest overall trip costs, with fewer crowds than peak summer.

Scenic Turkey landscape overlooking the Mediterranean coast

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